μ-Carbonyl-1:2κ2C-carbonyl-1κC-(1η5-cyclopentadienyl)(μ-phenylvinylidene)bis(triphenylphosphine-2κP)manganeseplatinum(Mn—Pt)

✍ Scribed by Vasiliev, Alexander D. ;Antonova, Alla B. ;Chudin, Oleg S.

• Publisher: International Union of Crystallography
• Year: 2007
• Tongue: English
• Weight: 1002 KB
• Volume: 63
• Category: Article
• ISSN: 1600-5368
• DOI: 10.1107/s1600536807032254

✦ Synopsis

The title compound, [MnPt(C 5 H 5 )(C 8 H 6 )(C 18 H 15 P) 2 (CO) 2 ], is a dinuclear heterometallic Mn-Pt(-C CHPh) complex obtained as a product of the addition of [Pt(PPh 3 )] 2 to ( 5 -C 5 H 5 )(CO) 2 Mn C CHPh. The two metal atoms are bridged by the -phenylvinylidene ligand and semibridged by a carbonyl group. The central fragment of the molecule is an almost planar methylenedimetallacyclopropane Mn-Pt(-C CHPh) system. The coordination of the Mn atom is formed by two parallel planes: the first plane consists of three carbonyl C atoms and the second is the cyclopentadienyl plane. A distorted square-planar coordination of the Pt atom is formed by two P atoms of PPh 3 and C atoms of the semibridging and C CHPh ligands.

Related literature

Corresponding geometry in the related MnPt complex with the chelating bis(diphenylphosphino)methane ligand was reported by Dolgushin et al. (2001). For crystal structures of related -carbene complexes containing the Mn-Pt--C triangle system, see: Jeffery et al. (1981). For details of the synthesis, see: Antonova et al. (1985). Experimental Crystal data [MnPt(C 5 H 5 )(C 8 H 6 )(C 18 H 15 P) 2 -(CO) 2 ] M r = 997.81 Orthorhombic, P2 1 2 1 2 1 a = 11.1320 (4) A b = 19.4463 (7) A c = 19.5174 (7) A ˚V = 4225.1 (3) A ˚3 Z = 4 Mo K radiation = 3.72 mm À1 T = 283 (2) K 0.29 Â 0.17 Â 0.14 mm Data collection Bruker SMART 4 K CCD areadetector diffractometer Absorption correction: multi-scan (SADABS; Sheldrick, 2004) T min = 0.352, T max = 0.624 37385 measured reflections 9675 independent reflections 8974 reflections with I > 2(I) R int = 0.026 Refinement R[F 2 > 2(F 2 )] = 0.020 wR(F 2 ) = 0.045 S = 0.95 9675 reflections 433 parameters H-atom parameters constrained Á max = 0.63 e A ˚À3 Á min = À0.25 e A ˚À3 Absolute structure: Flack (1983), with 4291 Friedel pairs Flack parameter: À0.007 (3) metal-organic compounds